I have this control board that is connected to a 12v magnetic clutch that energizes and drives a generator from a belt on the engine. It is somewhat curious and I am trying to figure out what it does but the circuit leaves me little clues.
Sorry the pic is so poor as it is so small a PCB it is tricky to photograph with the phone camera!!! Anyway it is shown so you can see how packed it is.
So far I am about half way down the board and drawn the circuit I think is there but it is really difficult.
Does anyone have an idea what the circuit so far is trying to do? The outputs from the 339 drive 6 transistors and these in turn drive 2 relays but that part is yet to be reverse engineered.
Thank for any ideas
Q
Sorry the pic is so poor as it is so small a PCB it is tricky to photograph with the phone camera!!! Anyway it is shown so you can see how packed it is.
So far I am about half way down the board and drawn the circuit I think is there but it is really difficult.
Does anyone have an idea what the circuit so far is trying to do? The outputs from the 339 drive 6 transistors and these in turn drive 2 relays but that part is yet to be reverse engineered.
Thank for any ideas
Q